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Staten not: om,

HIRAM TUCKER, OF NEWTON, MASSACHUSETTS.

Letters Patent No. 90,891, dated June 1, 1869.

IMPR'OfiMBNT IR COATING ARTICLES 0! IRON-'WIARB I 'lho'flohelnle referred to in the" Letter! Potent and nulrlng part of the lame To all whom it may concern.-

Be it known that I, Hmsm Tncxnn, of Newton, in the county of Middlesex, and'Stcte of Massachusetts, have 'nvented an Improvement in Coating Articles of Jronare; and I do herebydeolare that the following, taken in connection with the drawings which accom pany'and form port of this specification, is a description of my invention, suflicient to enable those skilled in the art to practise it. i

In the United States Letters Patent, granted. to me;

December 15, 1863, which Letterslatent were reis' sned- September 11, 1866, I describe and claim a new method of bronzing' or coloring the surfaces ofarticles of iron-ware, by first covering the surface ot'tlieorticle with a thin coating of oil, and then subjecting it to heat, the effect of which is to form upon the surface a thin, firm, durable film, having a. color or appearance no't'nnlike bronze. The surface thus made 1 some-- times varnished with spiriirvarnish. My present invention relates to the treatment of articles hronz'ed or colored in eccordance with my said patented process.

"I have fimnd, in practice, that the application of I eominon spirit-varnish to non, so bronzed or colored,

in not efl'e'ctiial in preventing oxidation of the motel, k

and I have discovered that by coating articles so colored or bronzeil, h copol-varnish, or a varnish having covered with splribvarnish, or are lefl; uncoated with varnish; i V

I claim, ontencoating, with oil-varnish, articles of iron'bronzed or. colored by the process-substantially 1 HIRAM TUCKER. Witn sses? ,Fnlmcrs Goonn,

Mr-wlaornmow.

are rendered practicai-ly-lnoagg; idizoble cor are made impermeable to the: action of 

